def test_0(self):
     self.assertEqual(True, check_power_of_two(0))
 def test_63(self):
     self.assertEqual(False, check_power_of_two(63))
 def test_64(self):
     self.assertEqual(True, check_power_of_two(64))
 def test_5(self):
     self.assertEqual(False, check_power_of_two(5))